Quote Originally Posted by jim p View Post
Another way to modify the amp would be to use the tone pot for a volume pot and the volume pot for a gain pot. This involves no cuts just jumpers and removing components with one being replaced (C24)
1) Remove PCB from chassis
2) Remove R13 C26 C24( to replace with 47nf for more bass or keep as is if you wish) C6 C5 C4 and R27
3) Replace C24 with a 47nf
4) Jumper junction of C6 C5 and CW2 (tone pot) to junction of R27 and R15
That’s it now the volume pot will control the gain of 2nd stage op amp for overdrive and the tone pot will control the volume.
I introduced myself a moment ago in the newbie section.
Got this amp free on a trade with an Emminence Legend and JJ tubes. Really want to do this simple mod first, has anyone completed it yet? This is my first tube amp and it was free so what the heck right?
I only have one question, would a 12aT7 work for me to lower gain a tad? I just want a tad more headroom with a bit less gain. The loss of tone control doesnt really bother me, thats why I put nice CTS pots and treble bleeds in my guitars and my pedals all have tone knobs!
Jim and the others... wow! great info thanks so much for posting all the replies!